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5.0

May 31, 2019
05/19

by
Chris Thiel

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Click on the title to see the video. Here I show how to try the code snippets that you will see while reading Chapter 2 of Horstmann, "Java Concepts"

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13

May 30, 2019
05/19

by
Chris Thiel

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Stage 2 of the Game Applet is making the player and have it be controlled with keyboard input. Source code is at apcs.mathorama.com and the game is at www.mathorama.com/ChickenLittle.html Video YouTube If you missed Stage 1, you can get it at here

5
5.0

May 31, 2019
05/19

by
Chris Thiel

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To make a variety of Poker games, we need a way to evaluate and compare Poker hands. This video also shows how to implement an interface in an inner class, so that a user can press a button, and new poker hands are generated. Starter code can be found at the APCS Wiki.

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14

May 31, 2019
05/19

by
Chris Thiel

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Starting Code: import java.util.Scanner; /** * Simple Polyalphabetic Cryptography * * @Chris Thiel * @28 Feb 2009 */ public class VignereCipherStartingCode { private static final String alphabet="ABCDEFGHIJKLMNOPQRSTUVWXYZ"; private static int nextChar(String k, int i){ i=i%k.length(); String letter=k.substring(i,i+1); return alphabet.indexOf(letter); } public static String encode (String m, String k){ String result=""; for (int i=0; im.length(); i++){ int offset=nextChar(k,...

Find out how to convert fractions of a degree with Degrees, minutes and seconds, and enter the wonderful world of the radian. I have a some examples of how to convert from degrees to radians and back again, as well as angular and linear speed using radians: Video Link

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9.0

May 31, 2019
05/19

by
Chris Thiel

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Make mew Projects and Classes in Eclipse.

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4.0

May 30, 2019
05/19

by
Chris Thiel

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Stage 3 Enemies are made and tested. VideoSource code is at http://apcs.mathorama.com/index.php?n=Main.SimpleGameTutorial and the game is at http://www.mathorama.com/ChickenLittle.html If you missed Stage 1, you can get it at http://www.youtube.com/watch?v=u459QHRepC8 or https://archive.org/details/GameAppletStage1. Stage 2 can be found at https://archive.org/details/GameAppletStage2

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3.0

May 31, 2019
05/19

by
Chris Thiel

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Part 2 of 3 of the One to Ten Game

0
0.0

Mar 10, 2021
03/21

by
Chris thiel (Zirhark)

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Customized version of https://www.thingiverse.com/thing:3521003 Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=3521003

Topics: customized, stl, thingiverse, Dice

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5.0

May 31, 2019
05/19

by
Chris Thiel

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Answers to a Chapter 12 Test on Partial Fraction Decomposition, Non Linear Systems and the Simplex Method

5
5.0

Mar 25, 2020
03/20

by
Chris Thiel

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Writing code to test the code you want to write! Sounds crazy but it is the quick way to make sure the code does what you want it to!

Matrix Determinant Video Use Cramer's Rule to solve a system of equations with Leinitz and Sarrus' method of finding the determinate of a matrix!

6
6.0

May 30, 2019
05/19

by
Chris Thiel

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Stage 1: Load the art and sounds to your eclipse project, so you can export your game into a .jar file to easily upload to a web site. You can get to the game and the source files at: Link to Game Link to Source Code Link to Video Link to Video on YouTube

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3.0

May 31, 2019
05/19

by
Chris Thiel

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Part 3 of the One to Ten Game which explains the Player Class. You can see a working copy at http://www.mathorama.com/OneToTenConsole.html

3
3.0

May 31, 2019
05/19

by
Chris Thiel

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Implementing java interfaces for any Object. For "starter" code see the APCS Wiki

Proof of the sum and difference formulas for sine, cosine and tangent

4
4.0

May 31, 2019
05/19

by
Chris Thiel

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Make a new object that represents a dot using the eclipse IDE.

0
0.0

Mar 24, 2021
03/21

by
Chris thiel (Zirhark)

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Customized version of https://www.thingiverse.com/thing:3521003 Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=3521003

Topics: stl, customized, Dice, thingiverse

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May 31, 2019
05/19

by
Chris Thiel

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We introduce a way to use code to work with a variety of classes using interfaces. Source code can be found at the APCS Wiki

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4.0

May 31, 2019
05/19

by
Chris Thiel

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An Arithmetic Sequence is a pattern where each element changes by adding a constant. Here are examples, as well as the proof the formula for a partial sum of an arithmetic sequence.

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6.0

May 31, 2019
05/19

by
Chris Thiel

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If you want to publish your Applet to the web, you probably need to make a Java Archive, or JAR file that allows you to embed your Applet in a web page

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May 31, 2019
05/19

by
Chris Thiel

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Making Images With GIMP You can download from http://www.gimp.org I show how to use some features in GIMP (from www.gimp.org) a open source image editor to use with your programs. First, drawing a picture from scratch, then cleaning up a photo, and finally tracing a photo to make a simple "cartoon" like image. For more info on where I used these images, see http://apcs.mathorama.com/

To solve for an unknown angle we will use all sorts of clever tricks, employing the trig formulas and identities in weird and wonderful ways!

5
5.0

May 31, 2019
05/19

by
Chris Thiel

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Overview of how to design a program that checks for patterns of matching words to detect plagiarism.

5
5.0

May 31, 2019
05/19

by
Chris Thiel

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In this tutorial, we make a game called "1 to 10" rather than tic-tac-toe (naughts and crosses). We will construct A Board Class in the first part along with a tester class. The idea is to move a page either one or two positions, and the one in the last position loses. The strategy is not to difficult, so eventually we can make a robot player who will always play perfectly.

Video at Archive.org Video at YouTube Solving for an unknown in the exponent requires logarithms! 19 Problems are explained that involve graphing and the properties of exponents and logarithms, as well using your graphing calculator

Using the trig identities for substituting a Pythagorean looking expression.

5
5.0

May 31, 2019
05/19

by
Chris Thiel

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Installing BlueJ 2012 Video Here is a 2012 version to check to make sure your Java SDK and BlueJ IDE installation is working correctly. While I'm using Ubuntu 12.04 to show this, it works pretty much the same in Windows and OSX.

Using the Binomial Theorem to expand binomials, Pascal's Rule, and an inductive proof of the Binomial Theorem. Video

6
6.0

May 31, 2019
05/19

by
Chris Thiel

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Here is a customized World for Gridworld where the message on the top is updated to show how many bugs there are and the location of the furthest Bug in the grid. You need to implement the Comparator interface for the grid world Bug class. You need to define a compare method that returns an int. Get the location of each Bug and use the compareTo method of Location. Here is the starter code: apcs.mathorama.com mpeg4 movie Quicktime movie

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214

Jun 8, 2019
06/19

by
Chris Thiel

A video podcast that show how to solve algebra, trigonometry and other skills needed to enroll in Calculus Archived from iTunes at https://itunes.apple.com/us/podcast/precalc-problems-explained/id288458906. Items in this collection are restricted.

Topics: podcast, itunes, apple

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177

May 30, 2019
05/19

by
Chris Thiel

OOP Java for the AP CompSci A Test Archived from iTunes at https://itunes.apple.com/us/podcast/apcs-java/id288458903. Items in this collection are restricted.

Topics: podcast, itunes, apple

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13

Sep 27, 2020
09/20

by
Chris Thiel

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Here the calculus is easy, but sometimes you have to use algebra to match your answer with the answer in the back of the book. A great skill to have so you can select a multiple choice item that expresses the answer in a slightly different form than the way you have it....

Topics: cthiel, mathorama, AP, Calculus, AB, derivatives, trig

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20

Sep 21, 2020
09/20

by
Chris Thiel

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A function may not have a derivative. After all slope is rise over run, and if it is a vertical line, it will have no slope. Here we have an example that has no slope at x=0, since the slopes from the left and the right do not agree (so the limit does not exist, so neither does the slope!

Topics: cthiel, mathorama, differentiability

1,518
1.5K

Dec 27, 2008
12/08

by
Chris Thiel

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Solution to the base convertion lab

Topics: apcs java, apcs, java

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18

Nov 10, 2020
11/20

by
Chris Thiel

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A basic polynomial to show what the MVT says and how to check your work with a TI-84 style calculator.

Topics: mathorama.com, thiel, ap, calculus, AB, MVT

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20

Oct 5, 2020
10/20

by
Chris Thiel

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We differentiate both sides of the equation with respect to time. (After all, a "rate" is something over time)

Topics: cthiel, mathorama, Calculus, Related Rates

4
4.0

Aug 29, 2020
08/20

by
Chris Thiel

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Some interesting limits

Topics: cthiel, mathorama, limits, absolution value, delta x

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19

Aug 27, 2020
08/20

by
Chris Thiel

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More example of how to use algebra to mind limits

Topics: cthiel, mathorama, calculus, indeterminate form, limits

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20

Aug 27, 2020
08/20

by
Chris Thiel

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More practice with algebra tricks to find a limit that has an indeterminate form

Topics: cthiel, calculus, mathorama, limit, limits, indeterminate, form, algebra tricks, analytic

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14

Sep 21, 2020
09/20

by
Chris Thiel

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An example of a case where integration by parts has more then one step, so I demonstrate the tabular method of integration by parts.

Topics: cthiel, mathorama, ultra violet, voodoo, tabular method, integration by parts

3,622
3.6K

Nov 12, 2008
11/08

by
Chris Thiel

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MasterMind Game is implemented in Jave using arrays and ArrayList

favoritefavoritefavoritefavoritefavorite ( 1 reviews )

Topics: apcs, java, mastermind

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23

Jan 31, 2021
01/21

by
Chris Thiel

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Intersections of Polar Curves (10.5 p 735 #29)

Topics: mathorama, cthiel, Polar, Precalc, AP Calc, BC

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37

Dec 5, 2020
12/20

by
Chris Thiel

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We find the maximum height of a ball thrown into the air. All we need to know is the velocity and height when it is thrown! In this one we use the constant acceleration of 32 feet per second per second.

Topics: mathorama, cthiel, max height, Calculus, TI-84, AP

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22

Jan 31, 2021
01/21

by
Chris Thiel

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The derivative of a inverse function is the reciprocal of the derivative of the inverse function. Be mindful of the exchange of values (x,y) to (y,x) with inverse functions

Topics: cthiel, mathorama, inverse functions, derivative, AP, Calculus, AB

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28

Jan 25, 2021
01/21

by
Chris Thiel

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Limiting the Domain of a Absolute Value Function so it would have an inverse (5.3 p340 #57)

Topics: cthiel, mathorama, domain, inverse functions

698
698

Aug 21, 2009
08/09

by
Chris Thiel

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Reveiw of Algebra 1 topics: line circles and word problems

Topics: precac, precalculus, algebra, lines, circles, word problems

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408

Jun 14, 2009
06/09

by
Chris Thiel

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my MS graduation

Topic: graduation